Sony TA 4650 (1977)
Specifications
| Feature | Specification |
| Year of Production | 1977-1979 |
| Power Specifications | 60W per channel (8Ω, 20Hz-20kHz, 0.1% THD) |
| Impedance | 4-16Ω |
| Sensitivity | 150mV (line), 2.5mV (phono MM) |
| Key Features | DC amplifier design, dual power supplies, direct-coupled OCL circuitry, FET input phono stage, independent power meters, speaker selector, tape monitor |
Historical Significance
Part of Sony's ES (Elevated Standard) series, representing their high-end engineering approach in the late 1970s with advanced DC amplification technology
Sound Signature
Clean, detailed, and neutral with excellent transient response, wide frequency range, and low distortion - characteristic of high-quality DC amplification
Maintenance and Restoration Tips
Aging electrolytic capacitors, dirty controls and switches, potential issues with power supply components after decades of use, meter lamp replacement
Collectibility and Market Value
- Market Value: $300-$600 depending on condition and cosmetic appearance
- Collectibility Rating: 7/10
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Related Models
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- Nakamichi BX-1 (1985)
- Acoustic Research research-ar-17 (1978)
- Acoustic Research AR-19 (1994)